Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time 226th roavin 924 84 23 Jun 2022 226th tkr-sh 🇫🇷 924 84 20 Aug 2022 226th Nickmiste 924 84 9 Nov 2022 226th postie77 924 84 19 May 2023 226th ertz1ertz 924 84 13 Sep 2024 226th Grabnukebomb 924 84 13 Sep 2024 226th Shanethegamer 🇺🇸 924 84 9 Apr 2025 226th HumanoidCPU 924 84 10 Apr 2025 226th annaproxy 924 84 11 Apr 2025 226th Re-Adventures 🇮🇳 924 84 15 Apr 2025 226th janbehrens 🇩🇪 924 84 17 Apr 2025 237th sean-niemann 🇺🇸 923 54 6 Aug 2024 237th Steffan153 🇫🇮 923 54 6 Aug 2024 237th lukegustafson 🇺🇸 923 54 7 Aug 2024 237th pardouin 🇫🇷 923 54 8 Aug 2024 237th Lydxn 🇨🇦 923 54 9 Aug 2024 237th JayXon 🇺🇸 923 54 9 Aug 2024 243rd ovs-code 🇩🇪 922 60 9 Oct 2023 243rd GrayJoKing 🇦🇺 922 60 11 Oct 2023 243rd Lydxn 🇨🇦 922 60 11 Oct 2023 243rd GolfingSuccess 🇬🇷 922 60 16 Nov 2023 243rd Steffan153 🇫🇮 922 60 28 Jan 2024 243rd JayXon 🇺🇸 922 60 29 Jan 2024 243rd rucin93 🇵🇱 922 60 10 Jul 2024 243rd sean-niemann 🇺🇸 922 60 10 Jul 2024 251st Steffan153 🇫🇮 922 67 19 Aug 2024 251st JayXon 🇺🇸 922 67 19 Aug 2024 253rd JayXon 🇺🇸 922 105 17 days ago 253rd KasperKivimaeki 🇫🇮 922 105 17 days ago 255th Lydxn 🇨🇦 920 90 6 May 2022 256th sisyphus-ppcg 🇦🇺 919 50 31 Jan 2023 256th saito-ta 🇯🇵 919 50 12 Dec 2024 258th uiamn 919 58 6 Sep 2022 258th 5quiwyrm 919 58 29 Sep 2022 258th alasdair-greenland 919 58 13 Jan 2023 258th kirjavascript 919 58 4 Aug 2025 258th Posandu 919 58 26 Aug 2025 258th mrxz 🇳🇱 919 58 3 Sep 2025 264th sean-niemann 🇺🇸 919 66 29 May 2025 265th Herbert00709 🇵🇱 918 92 17 Nov 2023 265th 4QT0R 918 92 23 Nov 2023 265th ovs-code 🇩🇪 918 92 3 Jun 2024 268th primo-ppcg 🇹🇭 917 24 10 Dec 2022 269th nwellnhof 🇩🇪 916 51 4 May 2022 269th primo-ppcg 🇹🇭 916 51 6 May 2022 269th janlelis 916 51 10 May 2022 269th Natanaelel 🇸🇪 916 51 2 Jun 2022 273rd Irratix 🇳🇱 916 61 7 May 2022 273rd TFeld00 🇩🇰 916 61 17 May 2022 273rd hallvabo 🇳🇴 916 61 4 Sep 2022 273rd DialFrost 🇸🇬 916 61 19 Dec 2022 273rd anter69 🇭🇺 916 61 19 Dec 2022 273rd Alex-x90 🇺🇸 916 61 27 Dec 2022 273rd commandblockguy 🇺🇸 916 61 22 Aug 2023 273rd fgrosshans 🇫🇷 916 61 22 Jul 2024 273rd duckyluuk 🇳🇱 916 61 15 Aug 2024 273rd rucin93 🇵🇱 916 61 31 May 2025 273rd katss2 916 61 17 Aug 2025 284th btnlq 915 59 6 Nov 2022 285th JayXon 🇺🇸 915 69 5 Apr 2023 285th Lydxn 🇨🇦 915 69 9 Apr 2023 287th xnor-gate 914 63 20 Jan 2025 288th MichalMarsalek 🇨🇿 914 71 5 May 2022 288th Lydxn 🇨🇦 914 71 7 May 2022 288th GrayJoKing 🇦🇺 914 71 8 May 2022 288th JayXon 🇺🇸 914 71 8 May 2022 288th Steffan153 🇫🇮 914 71 9 Mar 2023 288th Shanethegamer 🇺🇸 914 71 15 May 2023 288th MeWhenI 🇻🇦 914 71 8 Aug 2023 288th sean-niemann 🇺🇸 914 71 9 Jan 2025 296th Steffan153 🇫🇮 914 76 15 May 2023 296th primo-ppcg 🇹🇭 914 76 15 May 2023 296th Lydxn 🇨🇦 914 76 22 May 2023 296th GrayJoKing 🇦🇺 914 76 24 Aug 2023 300th arctouch-cristiannevianna 913 85 3 Apr 2023 First Prev 226–300 of 3,383 Next Last